Verify Physics in Action — Arduino Pendulum Period Measurer That Displays Real vs. Theory

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

When a pendulum swings, theory says its period depends only on length and gravity. This kit lets you capture that relationship directly, using an infrared break-beam sensor wired to an Arduino Uno. The 16x2 LCD displays measured time per swing right next to the theoretical value from T=2π√(L/g), so you can see just how close real motion matches the equation taught in every CBSE physics class.

What You'll Build

You'll assemble a complete pendulum timing station. The IR sensor mounts at the equilibrium point, detecting each crossing of the bob and sending precise timestamps to the Arduino. The LCD updates on every swing, showing both the measured period in milliseconds and the value your length and gravity predict. By observing the difference, you internalise the physics, not just memorise a formula.

What You'll Learn

• Convert an IR beam break into a digital pulse the Arduino can time
• Parse millis() data to calculate swing period and average over multiple cycles
• Drive a 16x2 character LCD via I²C to display live sensor readings
• Compare experimental results with theoretical predictions and discuss sources of error

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

It’s designed for CBSE Class 11-12 students tackling physics practicals on oscillations, ATL Tinkering Lab participants building measurement tools, and B.Tech first-years exploring embedded sensing. Even a 10-year-old maker with adult supervision can assemble it and grasp the core concept. Educators taking this into IIT/NIT/VIT lab sessions find it jumpstarts a discussion on experimental uncertainty.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.